#231A81#231A81

#231A81 is a dark, vivid blue. Relative luminance 0.027; OKLCH L 31.6% C 0.162 H 275.7°. Best body text is #FFFFFF at 13.67:1 contrast (WCAG AA passes).

Color values

HEX	#231A81
RGB	rgb(35, 26, 129)
HSL	hsl(245, 66%, 30%)
HSV	hsv(245, 80%, 51%)
CMYK	cmyk(72.9%, 79.8%, 0%, 49.4%)
CIE-LAB	lab(18.72, 38.00, -55.73)
CIE-LCH	lch(18.72, 67.45, 304.29°)
OKLab	oklab(31.59% 0.016 -0.1611)
OKLCH	oklch(31.59% 0.162 275.7)
XYZ	xyz(5.0237, 2.6806, 21.0173)
Luminance	0.0268 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231A81 #78811A

analogous

#1A4481 #231A81 #571A81

triadic

#231A81 #81231A #1A8123

tetradic

#231A81 #811A44 #78811A #1A8157

square

#231A81 #811A44 #78811A #1A8157

split-complementary

#231A81 #81571A #44811A

monochromatic

#07051B #15104E #231A81 #3124B4 #4B3DD8

Accessibility & contrast

On white

13.67

#231A81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.54

#231A81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231A81

13.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231A81	#FFFFFF	#000000	##FFFFFF
##231A81	1.00	13.67	1.54	13.67
#FFFFFF	13.67	1.00	21.00	1.00
#000000	1.54	21.00	1.00	21.00
##FFFFFF	13.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003284

Deuteranopia (green-blind)

#00297F

Tritanopia (blue-blind)

#00394D

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #231a81;
/* rgb */ color: rgb(35, 26, 129);
/* oklch */ color: oklch(31.6% 0.162 275.7);

Tailwind

colors: {
  custom: {
    50: '#6e59a7',
    500: '#231a81',
    950: '#000000',
  },
}

SCSS

$custom: #231a81;
$custom-light: #6e59a7;
$custom-dark: #000000;

JSON

{
  "hex": "#231a81",
  "rgb": {
    "r": 35,
    "g": 26,
    "b": 129
  },
  "hsl": {
    "h": 245.243,
    "s": 66.452,
    "l": 30.392
  },
  "oklch": {
    "l": 0.3159,
    "c": 0.16192,
    "h": 275.7
  },
  "luminance": 0.02681
}

Semantic roles & 50–950 ramp

primary

#231A81

secondary

#ABB542

accent

#E93EDA

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080410

muted

#7B797F

Preview Lab

Preview with #231A81

Body copy rendered with the generated semantic roles for this colour.

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